AMBARELLA INC

Securities Trading Plans of Directors and Executive Officers

During our fiscal quarter ending October 31, 2025, the following directors and officer adopted a “Rule 10b5-1 trading arrangement” as defined in Regulation S-K Item 408, as follows:

On September 30, 2025, Christopher Paisley, a member of our board of directors, adopteda Rule 10b5-1 trading arrangement providing for the sale from time to time of up to an aggregate of 8,000 of our ordinary shares. The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c). The duration of the trading arrangement isuntil September 30, 2026, or earlier if all transactions under the trading arrangement are completed.

On October 8, 2025, Feng-Ming Fermi Wang, our Chief Executive Officer and a member of our board of directors, adopteda Rule 10b5-1 trading arrangement providing for the sale from time to time of up to an aggregate of 115,000 of our ordinary shares. The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c). The duration of the trading arrangement isuntil December 31, 2026, or earlier if all transactions under the trading arrangement are completed.

No other director or officer, as defined in Rule 16a-1(f), adopted orterminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” each as defined in Regulation S-K Item 408, during the last fiscal quarter ended October 31, 2025.